41.093 UE Terrier-Improved Orion  was launched from Andoya Rocket Range, Andenes, Norway on October 13, 2011. The purpose of the CHAMPS missions is to provide in situ measurements of the number, density, and size distribution of the aerosol particles (meteor dust) that are the nucleation sites for the icy particles that create noctilucent clouds and polar summer mesospheric radar echoes. The Principal Investigator is Dr. Scott Robertson/University of Colorado.